What Is Tren de Aragua?

President Trump’s executive order on Saturday invoking the Alien Enemies Act targeted Venezuelan citizens 14 years and older with ties to the transnational gang Tren de Aragua, saying they “are liable to be apprehended, restrained, secured, and removed as Alien Enemies.”

Mr. Trump’s order was quickly challenged in court, but the gang has been a growing source of concern for U.S. officials over the last year. The Biden administration labeled Tren de Aragua a transnational criminal organization in 2024, the New York Police Department has highlighted its activity on the East Coast, and the Trump White House began the process of designating it a foreign terrorist organization in January.

Here is what we know about the gang:

A rising force out of Venezuela

Tren de Aragua (Train of Aragua, or Aragua Train) has roots in Tocorón prison in Venezuela’s northern Aragua state, which the group’s leaders had transformed into a mini-city with a pool, restaurants and a zoo. They reportedly recorded executions and torture there to maintain control over other prisoners.

As Venezuela’s economy collapsed and its government under President Nicolás Maduro became more repressive, the group began exploiting vulnerable migrants. Tren de Aragua’s influence soon stretched into other parts of Latin America, and it developed into one of the region’s most violent and notorious criminal organizations, focusing on sex trafficking, human smuggling and drugs.